Thanks you all! I’m going to start with max book .38 +p loads (the gun is .357) with heavy crimp to see how dirty the 4227 is. I’ll slowly work up from there with some of the reccomended charge weights y’all have mentioned and watch for pressure signs.
I’ll also do a similar smaller scale test with 231 (only have 1 pound) and work up.
What are your opinions of 173-200 grn bullets in a .38 case with heavy crimp and heavy 4227 charges? Thanks again!